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We have 1 cat that had crystals 5 years ago and have had him on Hill’s CD which he loves and the other 7 do too! For his wet, we use to use Hills CD but he changed his mind so we went to Purina RX canned. He hasn’t had any issues since. I would like to add that we also provide a water fountain which he drinks better from and we put a little water in his food with forti flora. I hope you’ve got the problem figured out.
Janet
